Strong's G2972 · Greek

Κώς

Kos · koce

of uncertain origin; Cos, an island in the Mediterranean

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 (KJV) Κῶς , gen. Κῶ, ἡ , Cos , an island in the Ægean Sea: acc. Κῶ , Ac 21:1 ( Κῶν , Rec.).† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain